Determine the grams of protein in a small potato that has a total of 84.0 kcal, and contains 20.0 grams of carbohydrates and no fat.

The total energy content in the potato = 84.0 Kcal

Amount of carbohydrate present in the potato = 20.0 g

Energy value of carbohydrate = 4 kcal/gram

Energy value of protein = 4 kcal/gram

Now the energy contribution from 20.0 g carbohydrate = 20.0 g * 4 kcal/1 g = 80.0 kcal

Therefore, the energy contribution from protein present in the potato is:

84 - 80 = 4.0 kcal

This energy corresponds to 1 g of protein

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.